How to measure brake cable length

How to measure the different models is shown below. If you cannot find the appropriate length, choose the one that is a little longer. The diameter on the case is inner diameter.

Measure the length of the brake cable like this:

Direct wiring is measured like this:
Axle dimension + 700 mm = Wire length

Twin wires are measured like this:
One measurement shows the total length and the other length is the housing.
E.g. Twin wire 2920/1230

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